Julie,
In my world, what is taught in the home should be re-inforced in the school, and vice versa. This incorrectly assumes that what is taught in the home and in the school are complimentary. This is not the case in my experience. When we got a call from the school informing us of our child's behavior which was not acceptable, we investigated the behavior and dealt with the child. The behavior was not repeated. The child learned where the line was and to not cross the line. Too many times, children do not know where the line is. Too many times today, either the parents or the schools move the line so that the child is confused. Reinforcement of the line teaches the child right from wrong. When the line is crossed, the child must be immediately returned to the other side of the line. If not, the child has established a new line.
When we were young, the punishment was severe for crossing the line, hence the line was not crossed often. This is not true today. No reprecussions for crossing the line. Too much "do what feels good" and not enough line enforcement by both parents and teachers.